#!/bin/bash
set -e
imagerepo=docker.ctyun.cn:60001/base-`arch`
podnetwork=10.244.0.0/16
usedocker=1
baseinstall=0
goinstall=0
runcinstall=0
containerdinstall=0
dockerinstall=0
k8sinstall=0
ip=$(hostname -I | awk '{print $1}')
name=$(hostname)
ARCH=`arch`

help() {
    echo "Usage:"
    echo "Install: $0 <-i ONLYINSTALL>"
    echo "Setup: $0 <-d DIST> <-n NODETYPE> <-t CONTAINERTYPE>"
    echo "Other options: $0 [-c] [-h]"
    echo "Description:"
    echo "without -i will install and setup current node with -d -n and -t"
    echo "-c reset and clean current node"
    echo "-h print help message"
    echo "-i ONLYINSTALL package docker or k8s, without any config"
    echo "-d DIST, ctl2 or ctl3"
    echo "-n NODETYPE, master or worker"
    echo "-t CONTAINERTYPE, docker or containerd"
    echo "-u Update current baseline"
    echo "-b BASELINE, 120 or 125 or 129"
    exit -1
}
[[ $# == 0 ]] && help && exit
while getopts 'i:d:n:t:ch' OPT; do
    case $OPT in
        i) if [ "$OPTARG" == "docker" ] || [ "$OPTARG" == "k8s" ];then
               onlyinstall=$OPTARG && echo "only install $OPTARG..."
           else
               echo "unsupport onlyinstall value $OPTARG..." && exit
           fi
        ;;
        d) if [ "$OPTARG" == "ctl2" ] || [ "$OPTARG" == "ctl3" ];then
               if [[ "$OPTARG" == "ctl2" && `rpm --eval %{dist}` == ".ctl3" ]] || [[ "$OPTARG" == "ctl3" && `rpm --eval %{dist}` == ".ctl2" ]];then
                   echo "$OPTARG is not suitable for current distrubution" && exit
               else
                   dist=$OPTARG && echo "dist is set as $OPTARG..."
               fi
           else
               echo "unsupport dist type $OPTARG..." && exit
           fi
        ;;
        n) if [ "$OPTARG" == "master" ] || [ "$OPTARG" == "worker" ];then
               nodetype=$OPTARG && echo "nodetype is set as $OPTARG..."
           else
               echo "unsupport node type $OPTARG..." && exit
           fi
        ;;
        t) if [ "$OPTARG" == "docker" ];then
               usedocker=1 && echo "usedocker is set as 1..."
           elif [ "$OPTARG" == "containerd" ];then
               usedocker=0 && echo "usedocker is set as 0..."
           else
               echo "unsupport container engine type $OPTARG..." && exit
           fi
        ;;
        c) echo "clean k8s setup..."
           kubeadm reset -f
           rm -rf /etc/cni/*
           ifconfig cni0 down > /dev/null 2>&1
           ifconfig flannel.1 down > /dev/null 2>&1
           ifconfig docker0 down > /dev/null 2>&1
           ip link delete cni0 > /dev/null 2>&1
           ip link delete flannel.1 > /dev/null 2>&1
           echo "k8s reset and network all deleted!" && exit
        ;;
        h) help && exit;;
        ?) help && exit;;
    esac
done

echo "开始一键安装模式，该过程需要使用root"
[ `whoami` == "root" ] || exit
rpm -q criu || baseinstall=1
if [ $baseinstall -eq 0 ]; then
     echo "检查到基础库已安装!"
else
     echo -e "\033[44;37m 安装基础库 \033[0m"
     cd rpms
     rpm -ivh --force --nodeps protobuf-*.rpm zlib-devel-*.rpm vim-filesystem-*.rpm vim-common-*.rpm libnetfilter_queue-*.rpm libnetfilter_cttimeout-*.rpm libnetfilter_cthelper-*.rpm gpm-libs-*.rpm vim-enhanced-*.rpm emacs-filesystem-*.rpm protobuf-devel-*.rpm protobuf-c-*.rpm conntrack-tools-help-*.rpm conntrack-tools-*.rpm criu-*.rpm socat-*.rpm libcgroup-*.rpm
     cd -
fi
# go version || goinstall=1
# if [ $goinstall -eq  0 ]; then
#      echo "检查到golang已安装!"
# else
#      echo -e "\033[44;37m 安装 golang \033[0m"
#      rpm -ivh rpms/golang-*${dist}*.rpm
# fi
echo -e "\033[44;37m 安装 runc/containerd/docker, 如果有老版本请先自行御载！！！ \033[0m"
runc -v || runcinstall=1
if [ $runcinstall -eq  0 ]; then
     echo "检查到runc已安装!"
else
     echo "安装runc..."
     rpm -ivh rpms/runc-*${dist}.${ARCH}.rpm
fi
containerd -v || containerdinstall=1
if [ $containerdinstall -eq  0 ]; then
     echo "检查到contained已安装!"
else
     echo "安装contained..."
     rpm -ivh rpms/containerd-*${dist}.${ARCH}.rpm
     systemctl enable containerd.service
     systemctl restart containerd.service
fi
if [ $usedocker == 1 ];then
    which docker || dockerinstall=1
    if [ $dockerinstall -eq  0 ]; then
        echo "检查到Docker已安装!"
    else
        echo "安装docker..."
        rm -rf /etc/docker/daemon.json #This file should be delete, or start service will fail. Offline mode does NOT need this file
        rpm -ivh rpms/docker-*${dist}.${ARCH}.rpm
        sleep 5
        systemctl enable docker
        systemctl daemon-reload
        systemctl start docker
    fi
else
    sockoption="--cri-socket /run/cri-containerd/cri-containerd.sock"
    sedcmd='-e "s,dockershim.sock,containerd/containerd.sock,g"'
fi
if [ "x$onlyinstall" == "xdocker" ];then
    echo "Docker 安装完成. Exit" && exit
fi

echo -e "\033[44;37m 安装 k8s \033[0m"
rpm -qa | grep kubelet && k8sinstall=1
if [ $k8sinstall -eq 1 ]; then
    echo "检查到k8s已安装!"
else
    echo "安装k8s rpms..."
    cd rpms
    if [ "$nodetype" == "worker" ];then
        rpm -ivh kubernetes-kubelet-*${dist}.${ARCH}.rpm kubernetes-client-*${dist}.${ARCH}.rpm kubernetes-node-*${dist}.${ARCH}.rpm
    elif [ "$nodetype" == "master" ];then
        rpm -ivh kubernetes-*${dist}.${ARCH}.rpm
    else
        echo "Please specify the 'nodetype' correctly through the '-n' option." && exit
    fi
    cd -
    systemctl enable kubelet
fi

if [ ! -d /opt/cni ];then
    echo -e "\033[44;37m 安装k8s cni插件 \033[0m"
    rpm -ivh rpms/containernetworking-plugins-*${dist}.${ARCH}.rpm
    mkdir -p /opt/cni
    ln -s /usr/libexec/cni /opt/cni/bin
fi
if [ "x$onlyinstall" == "xk8s" ];then
    echo "K8s 安装完成. Exit" && exit
fi

if [ ! -f /etc/kubernetes/admin.conf ];then
    echo -e "\033[44;37m 设置k8s \033[0m"
    iptables -P FORWARD ACCEPT
    systemctl stop firewalld.service
    systemctl disable firewalld.service
    sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
    swapoff -a
    grep ^nameserver /etc/resolv.conf || (chmod a+w /etc/resolv.conf && echo "nameserver 114.114.114.114" >> /etc/resolv.conf)
    echo -e "\033[44;37m 加载k8s镜像 \033[0m"
    cd tar-${ARCH}/
    for i in `ls *.tar`;do
        if [ $usedocker == 1 ];then
            docker load -i $i
        else
            ctr image import $i
        fi
    done
    cd -
    if [ "$nodetype" == "master" ];then
        kubeadm init $sockoption --image-repository=$imagerepo --pod-network-cidr=$podnetwork --apiserver-advertise-address=$ip --kubernetes-version=v1.20.2
        #默认使用参数配置（因为可做到无人工修改），也可以解注如下代码并手工修改kubeadm-template.yaml，通过config方式完成init。
        #cp config/kubeadm-template.yaml kubeadm.yaml
        #sed -i -e "s/advertiseAddress: ip/advertiseAddress: $ip/g" -e "s/name: master/name: $name/g" -e "s/ARCH/`arch`/g" $sedcmd kubeadm.yaml
        #kubeadm init --config kubeadm.yaml
        mkdir -p $HOME/.kube
        cp /etc/kubernetes/admin.conf $HOME/.kube/config
        cp /etc/kubernetes/admin.conf ~/.kube/config
        chown $(id -u):$(id -g) $HOME/.kube/config
        sed "s/ARCH/`arch`/g" config/flannel.yaml | kubectl apply -f -
        #mkdir -p /run/flannel;cp config/subnet.env /run/flannel/;cp config/10-flannel.conflist /etc/cni/net.d/ #In case files missing
        sleep 5
        echo -e "\033[44;37m 去除k8s污点 \033[0m"
        master_name=$(kubectl get node | grep master | awk '{print $1}')
        master_taint=$(kubectl describe node $master_name | grep Taints | awk '{print $2}')
        if [[ $master_taint = "<none>" ]];then
            echo "不存在污点！"
        else
            kubectl taint node $master_name $master_taint-
            kubectl taint node $master_name node.kubernetes.io/not-ready-
        fi
        #rm -rf kubeadm.yaml
        echo  -e "\033[44;37m master结点全部部署完成，请拷贝kubeadm join命令行备用 \033[0m"
    elif [ "$nodetype" == "worker" ];then 
        echo  -e "\033[44;37m 请运行master配置完成后提示的kubeadm join命令行 \033[0m"
    else
        echo "Please specify the 'nodetype' correctly through the '-n' option." && exit
    fi
fi
